• Anaesthesia · Sep 2000

    Randomized Controlled Trial Comparative Study Clinical Trial

    Comparison of a new video-optical intubation stylet versus the conventional malleable stylet in simulated difficult tracheal intubation.

    • P Biro, M Weiss, A Gerber, and T Pasch.
    • Senior Anaesthetist and Head of Department, Institute of Anaesthesiology, University Hospital Zurich, Raemistr. 100, CH-8091 Zurich, Switzerland.
    • Anaesthesia. 2000 Sep 1;55(9):886-9.

    AbstractHandling and efficacy of a new video-optical intubation stylet were assessed in a simulated difficult tracheal intubation setting and compared with a conventional malleable stylet. Forty-five anaesthetists performed 10 tracheal intubations using both techniques. Laryngoscopy was performed by the observer, who created a grade 3 view according the classification by Cormack and Lehane. The time taken to place the tracheal tube and the final tracheal tube positions were documented. Mean (SD) intubation time for the video-optical stylet was 20.4 (7.7) s and for the malleable stylet 10.2 (3.3) s (p<0.01). With the video-optical stylet the trachea was correctly intubated in all 225 attempts; with the malleable stylet 44 (19.6%) oesophageal and 44 (19.6%) endobronchial intubations occurred (p<0.01). The video-optical intubation stylet enabled us to recognise inappropriate tracheal tube positions and to correct them immediately. This equipment can be considered a reliable and effective tool for management of the difficult airway.

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